I think the real issue is that most folks don't exactly approve of 1, much less any of the following, regardless of what the motivation is for authorities and if they are, in fact, having their information processed for any myriad number of reasons. That's why much of the hullabaloo over data collection is framed as a privacy concern. Your line of thinking lends itself to the argument I hate the most, which is "If I'm not doing anything wrong, should I care that my data is being collected?"

I know there has always been issues with backdoors and talk of what the actual goings-on has been and a bunch of conjecture, which would be subject to the "slippery slope" argument as an objection or call to reason, but the revelations as of late have just shown that the slippery slope is actual being slid down by NSA, CIA and the like.

Whether or not your information collected is going to be collected, information obtained from it or acted upon doesn't seem to be the case, essentially because it would seem that automation of all of these steps renders 1-3 the same thing, because of a lack of jurisdiction or oversight. As for 4, well, I mean, the ball seems to rolling in that direction already.